Brake fluid question

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Apr 6, 2008 | 11:05 AM

rehirsch8

Thread Starter

Instructor

Joined: Feb 2005

Posts: 209

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From: White Bear Lake MN

Brake fluid question

I want to change out my brake fluid this sprint and I was looking at the Amsoil web site. They recommend their DOT 4 fluid for a C5. The cap says to use DOT 3 fluid. Is there any issue using DOT4? Thanks!!

Apr 6, 2008 | 12:35 PM

AU N EGL

Team Owner

Joined: Sep 2003

Posts: 43,084

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From: Raleigh / Rolesville NC

DOT 4 is a far better brake fluid. Higher Dry and Wet boiling points. Go with the DOT4

DOT3 or originally designed for drum brakes, It works but DOT 4 is better

Apr 6, 2008 | 12:47 PM

BlackZ06

Safety Car

Joined: Aug 2000

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From: San Rafael CA

DOT4 from any reputable fluid supplier (such as Castrol) works GREAT !!

Apr 6, 2008 | 01:23 PM

C66 Racing

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From: King George VA

I'm going to shift to the new AMSOIL DOT 4 fluid this year in my Z06.

AMSOIL Series 500 High Performance DOT 3 Brake Fluid
AMSOIL Series 600 DOT 4 Racing Brake Fluid

DOT 3
Dry 525F, Wet 313F
DOT 4
Dry 580F, Wet 410F

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May 4, 2008 | 03:58 PM

ShadowLight

Racer

Joined: Oct 2006

Posts: 483

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From: Austin TX

Quote:

Originally Posted by Subdriver

How has that been working out for ya? Using it in your clutch as well?

May 6, 2008 | 01:23 AM

C66 Racing

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Joined: Aug 2001

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From: King George VA

Quote:

Originally Posted by ShadowLight

How has that been working out for ya? Using it in your clutch as well?

Um... I'd like to say that I've had a chance to take my car to the track... but I can't. Been getting ready for deployment and been too busy. Racing season for me postponed to the fall after a summer deployment.

FYI, I will, but haven't yet, use the DOT 4 version in my clutch as well as the brakes. Since I bought my Z06 new in Aug 2001, I've been using my brake fluid of choice in my clutch without issues. Used Motul RBF 600 for a few years, then switched to Wilwood EXP 600 Plus for a few years.

May 7, 2008 | 08:48 AM

ShadowLight

Racer

Joined: Oct 2006

Posts: 483

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From: Austin TX

I think I'm probably going to get some and give it a whirl. I had clutch issues in Colorado (just moved to Texas) which is inherently slower and therefore less heat, I can only imagine down here...so I better do all I can.